Thanks for your advice, I will try it.
Yes, I would make .mp4 if Vegas allowed my too, but every time I have tried
( 4 time now I think) the program stop running.
What I do is:
1. select Sony AVV and template AVCHD 1920×1080 50i
2. Click “Advanced render”, Click “Custom” and then “System” to select mp4
file format. It never fails. Vegas stops every time.
Jan Erik